code: def test_un_basics(self):
      self.run_layer_test(
          layers.UnitNormalization,
          init_kwargs={"axis": -1},
          input_shape=(2, 3),
          expected_output_shape=(2, 3),
          supports_masking=True,
      )
      self.run_layer_test(
          layers.UnitNormalization,
          init_kwargs={"axis": (1, 2)},
          input_shape=(1, 3, 3),
          expected_output_shape=(1, 3, 3),
          supports_masking=True,
      )
  
file_path: keras/keras/layers/normalization/unit_normalization_test.py
imports: import numpy
  import pytest
  from keras import backend
  from keras import layers
  from keras import testing
label_desc: Use image node_id 1 for calling the UnitNormalizationTest obj's underlying member method code with example usage: obj.test_un_basics() without return types